Stephen henry leech and henry lewis doulton



No. 451,854. Patented May 5,1891.

UNITED STATES PATENT OFFICE.

STEPHEN HENRY LEECH AND HENRY LEVIS DOULTON, OF LAMBETH, ENGLAND.

lVlANUFACTU RE O F TERRA- GOTTA BLOCKS.

SPECIFICATION forming part of Letters Patent No. 451,854, dated May 5, 1891.

Application iiled April 25, 1890. Serial No. 349.497. (No model.) Patented in England March 26, 1889, No. 5,205.

To all whom it may concern:

Be it known that we, STEPHEN HENRY LEEoH, manager, and HENRY LEWIS DOUL- TON, potter, subjects of the Queen of Great Britain, both residing at the Albert Embankment,La1nbeth,in the county of Surrey,Eng-` molds with sheets of clay, by building up the form by hand, running with templets or reverses, or expressing as a continuous stream of a given section from a die, forming only the outer surface with but few internal webs or supports. Such blocks are usually mere shells, not strong enough to be used for building purposes without filling.

According to ourinvention We make blocks with a number of small cells or cavities of circular, hexagonal, or other form, somewhat similar to the holes in the well-known perforated bricks, except that in place of running completely through the block they are only open at one face, stopping short of the opposite face. Such blocks may be molded at the closed end,and,owing to the smallness of the cells, can be employed for building purposes without any filling, and yet, since the cells in them are open at one end, the clay can dry thoroughly. There is also the further advantage that such blocks can be out at the back or ends to suit any required notching for iron work or the like without interfering wit-h their proportionate strength, whereas the ordinary terra-cotta blocks are'seriously daniaged and weakened vby being out down after being made.

XVe produce the blocks by first making a shell by lining a mold with sheets of clay and afterward filling such shell with a piece or pieces of perforated clay produced in a similar manner to the ordinary well-known perforated bricks. This perforated clay adheres to the walls of the shell, the whole forming one mass.

Figure l is a longitudinal section of the block. Fig. 2 is a longitudinal section of the shell, and Fig. 3 is a longitudinal section of the piece of perforated clay with which the shell is lled.

A indicates the shell, and B the piece of perforated clay.

The blocks, after being formed as above described, are dried and fired in the usual way.

l. The process of making blocks of terracotta and like material, consisting in forming a hollow shell of clay` filling such shell with a piece or pieces of perforated clay, and then drying and firing the same.

2. The process of making blocks of terracotta and like material, consisting in producing a hollow shell by lining a mold with sheets of clay, filling such shell with a piece or pieces of perforated clay, and then drying and firing the same. i

STEPHEN HENRY LEECH. HENRY LEWIS DOULTON.

Writnesses to the signature of Stephen Henry Leech:

JN0. H. WHITEHEAD,

24 Southampton Buildings, London, I/V. O.

T. F. BARNES,

2S Southampton Buildings, London, W O.

Vitnesses to the siguatu re of Henry Lewis Doulton:

B. AINsLEY; 2 Rae lVIogaclor, Algiers.

LOUIS SELL, y Hotel Kirsch, Algiers. 

